Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '12.0.0.0'
+171
ERRNo PTR record availible DNS server 'dmtu.mt.ns.els-gms.att.net' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.0.0.12.in-addr.arpa'.